local helpers = {}

--- Creates a keymap to edit a certain config file
--- @param map string the keys that follow <Leader>e
--- @param path string the relative path from the config root
helpers.edit_cf = function(map, path)
    vim.keymap.set('n', '<Leader>e' .. map, function()
        vim.cmd('tabedit ' .. vim.fn.stdpath 'config' .. '/' .. path)
    end, { desc = 'Edit ' .. path .. ' in a new tab' })
end

helpers.map = function(keys, func, opts, mode)
    mode = mode or 'n'
    vim.keymap.set(mode, keys, func, opts)
end

helpers.edit_cf('h', '/lua/helpers.lua')

---@param opts? { cmd?: string, win_opts?: table, buf_opts?: table }
helpers.open_term = function(opts, buf_opts)
    opts = opts or {}
    local cmd = opts.cmd or ''
    local win_opts = opts.win_opts
    local buf_options = buf_opts or opts.buf_opts or {
        bufhidden = 'wipe',
        modifiable = false,
    }

    local buf = vim.api.nvim_create_buf(false, true)
    for k, v in pairs(buf_options) do
        vim.api.nvim_set_option_value(k, v, { buf = buf })
    end

    local height = math.ceil(vim.o.lines * 0.9)
    local width = math.ceil(vim.o.columns * 0.9)
    local win = vim.api.nvim_open_win(buf, true, win_opts or {
        style = 'minimal',
        relative = 'editor',
        width = width,
        height = height,
        row = math.ceil((vim.o.lines - height) / 2),
        col = math.ceil((vim.o.columns - width) / 2),
        border = 'single',
    })

    vim.api.nvim_set_current_win(win)

    vim.fn.jobstart(cmd, {
        term = true,
        on_exit = function(_, _, _)
            if vim.api.nvim_win_is_valid(win) then
                vim.api.nvim_win_close(win, true)
            end
        end,
    })

    vim.cmd.startinsert()
end

helpers.has_copilot = function()
    return vim.fn.getenv 'COPILOT_API_KEY' ~= vim.NIL
end

helpers.open_file_modal = function(path, title)
    local width = math.floor(vim.o.columns * 0.85)
    local height = math.floor(vim.o.lines * 0.85)

    local row = math.floor((vim.o.lines - height) / 2)
    local col = math.floor((vim.o.columns - width) / 2)

    local buf = vim.api.nvim_create_buf(false, true)

    vim.api.nvim_open_win(buf, true, {
        relative = 'editor',
        width = width,
        height = height,
        row = row,
        col = col,
        style = 'minimal',
        border = 'rounded',
        title = ' ' .. title .. ' ',
        title_pos = 'center',
    })

    vim.api.nvim_buf_set_name(buf, path)

    local lines = vim.fn.readfile(path)
    vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)

    vim.bo[buf].filetype = 'markdown'
    vim.bo[buf].buftype = 'nofile'
    vim.bo[buf].bufhidden = 'wipe'
    vim.bo[buf].swapfile = false
    vim.bo[buf].modifiable = false
    vim.bo[buf].readonly = true

    vim.wo.wrap = false
    vim.wo.number = false
    vim.wo.relativenumber = false
    vim.wo.cursorline = true

    vim.keymap.set('n', 'q', '<cmd>close<CR>', {
        buffer = buf,
        silent = true,
        desc = 'Close cheatsheet',
    })
    vim.keymap.set('n', '<Esc>', '<cmd>close<CR>', {
        buffer = buf,
        silent = true,
        desc = 'Close cheatsheet',
    })
end

local function get_formatter_bin(formatter)
    return vim.fn.stdpath 'data' .. '/mason/bin/' .. formatter
end

local formatter_args = {
    pint = function(file)
        return {
            get_formatter_bin 'pint',
            '--stdin-filename',
            file,
        }
    end,
    eslint_d = function(file)
        return {
            get_formatter_bin 'eslint_d',
            '--stdin',
            '--stdin-filename',
            file,
            '--fix-to-stdout',
        }
    end,
    stylua = function(file)
        return {
            get_formatter_bin 'stylua',
            '--stdin-filepath',
            file,
            '-',
        }
    end,
}

helpers.format_buffer = function(formatter, buf, cwd)
    local file = vim.api.nvim_buf_get_name(buf)
    local input = table.concat(vim.api.nvim_buf_get_lines(buf, 0, -1, false), '\n')
    local result = vim.system(formatter_args[formatter](file), {
        text = true,
        stdin = input,
        cwd = cwd,
    }):wait()

    if result.code ~= 0 then
        vim.notify(result.stderr, vim.log.levels.ERROR)
        return
    end

    vim.api.nvim_buf_set_lines(buf, 0, -1, false, vim.split(result.stdout, '\n', { plain = true }))
end

return helpers
-- nnoremap <Leader>ev :tabedit $MYVIMRC<CR>